Nemuro weather in September

In September, Nemuro sees average daytime highs of 17°C and overnight lows near 15°C, with 160 mm of rain across 11.1 wet days and about 12.3 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 18°C in the first days to 16°C by the end. The sky is clear or mostly clear about 24% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 hours at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Nemuro's 8th-clearest and 9th-windiest month. For the whole year in context, see Nemuro's year-round climate.

Daytime high
17°
2nd warmest
Overnight low
15°
11th coldest
Rainfall
160 mm
11.1 wet days
Daylight
12 h 18 min
5:03 AM – 5:21 PM
Cloud cover
67%
8th clearest
Wind
20 km/h
9th windiest
Solar energy
3.67 kWh/m²
Travel score
5.1
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 18°C in the first days to 16°C by the end.

A typical September day in Nemuro reaches about 17°C in the afternoon and slips back to 15°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 19°C. Set against its neighbours, September runs on par with August and about 4°C warmer than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
11816
21816
31816
41816
51816
61816
71816
81816
91716
101716
111716
121716
131716
141715
151715
161715
171715
181715
191715
201715
211715
221715
231614
241614
251614
261614
271614
281614
291614
301614

How September really feels in Nemuro

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Nemuro weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-1° / -4°548.27.79.20.0
Feb-2° / -5°447.17.610.20.0
Mar / -2°699.17.211.60.0
Apr / 809.73.113.20.0
May / 9810.40.214.50.9
Jun10° / 909.3015.12.3
Jul14° / 13°11910014.94.0
Aug17° / 16°14111.2013.85.2
Sep17° / 15°16011.1012.35.1
Oct13° / 11°12210010.83.9
Nov / 9110.31.19.51.4
Dec / -1°779.65.78.80.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 62%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13070
23169
33070
43169
53268
63169
73268
83367
93367
103466
113466
123664
133565
143664
153763
163862
173961
183961
194060
204060
214258
224258
234456
244555
254555
264555
274555
284654
294753
304753

Chance of precipitation in September

Any precipitation

Nemuro gets around 160 mm of rain over 11.1 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 37% and peaks near 39% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
138
239
339
439
539
639
739
839
939
1039
1139
1239
1338
1438
1538
1637
1737
1837
1936
2036
2136
2236
2336
2436
2536
2636
2736
2836
2936
3036

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 40% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11937359
21937359
32037349
42137339
52237329
62237328
72338318
82438308
92638288
102738277
112838267
123038247
133238236
143439216
153639205
163839185
174138164
184338154
194538133
204837123
215037112
225236102
23553582
24573571
25593461
26603361
27623251
28653140
29682930
30692830

Wind in September

Winds average 20 km/h in September.

Across September, daily wind ranges from about 19 km/h on the calmest days to 22 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202530
Wind speed (km/h)Feels
119light breeze
219light breeze
319light breeze
419light breeze
519light breeze
619light breeze
719light breeze
819light breeze
919light breeze
1019light breeze
1120light breeze
1220light breeze
1320light breeze
1420light breeze
1520light breeze
1620breezy
1720breezy
1820breezy
1920breezy
2021breezy
2121breezy
2221breezy
2321breezy
2421breezy
2521breezy
2622breezy
2722breezy
2822breezy
2922breezy
3022breezy

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 hours at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over September. Sunrise moves from 4:46 AM to 5:20 AM, and sunset from 5:49 PM to 4:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.04:465:49
213.04:475:47
312.94:485:45
412.94:505:43
512.84:515:41
612.84:525:40
712.74:535:38
812.74:545:36
912.64:555:34
1012.64:565:32
1112.54:585:30
1212.54:595:28
1312.45:005:26
1412.45:015:25
1512.35:025:23
1612.35:035:21
1712.25:045:19
1812.25:065:17
1912.15:075:15
2012.15:085:13
2112.05:095:11
2212.05:105:09
2311.95:115:08
2411.95:135:06
2511.85:145:04
2611.85:155:02
2711.75:165:00
2811.75:174:58
2911.65:184:56
3011.65:204:54

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.67 kWh/m².

For context, solar energy here swings from a low near 1.71 kWh/m² to a high of 5.21 kWh/m² in May across the year — September's 3.67 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.9Moderate
23.9Moderate
33.9Moderate
43.8Moderate
53.8Moderate
63.8Moderate
73.8Moderate
83.8Moderate
93.7Moderate
103.7Moderate
113.7Moderate
123.7Moderate
133.7Moderate
143.7Moderate
153.7Moderate
163.6Moderate
173.6Moderate
183.6Moderate
193.6Moderate
203.6Moderate
213.6Moderate
223.6Moderate
233.5Moderate
243.5Moderate
253.5Moderate
263.5Moderate
273.5Moderate
283.4Moderate
293.4Moderate
303.4Moderate
Planning a trip in September

Hazard calendar for Nemuro

In seasonPeak

In September, Nemuro sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.

Nemuro sits in the Pacific typhoon belt; the season peaks July–October.

Pacific typhoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Nemuro?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.1
Sightseeing
2nd-best month of the year
1.1
Beach & pool
2nd-best month of the year

September is a reasonable time to visit Nemuro for sightseeing.

What to pack for Nemuro in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Nemuro sees daytime highs around 17°C and nights near 15°C. Worth packing: a warm layer, rain gear and a windbreaker. About 11 days see rain.

a warm layerrain geara windbreaker

Sea temperature near Nemuro in September

The nearest coast averages about 16°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in September at about 16°C and coldest in February near 0°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

0°5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan2Bracing
Feb0Bracing
Mar0Bracing
Apr2Bracing
May5Bracing
Jun8Bracing
Jul13Bracing
Aug16Cool
Sep16Cool
Oct13Bracing
Nov10Bracing
Dec5Bracing

UV index in Nemuro in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Nemuro peaks around August 17 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowAug 17UV 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr5Moderate
May7Very high
Jun7High
Jul5High
Aug9Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Nemuro?

Nemuro sits at 43.3°N, 145.6°E, 24 m above sea level, in Japan. The nearest listed city is Shibetsu, 52 km away.

AbashiriMotomachiKitamiEngaruSarubetsu

Topography around Nemuro

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Nemuro.

Within 3 km, the terrain around Nemuro has only modest variations in elevation — a maximum elevation change of 64 m around an average of 20 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 101 m; within 80 km, large variations in elevation — a maximum elevation change of 1,062 m.

The land around Nemuro is covered by water (32%) and artificial surfaces (21%) within 3 km, water (75%) within 16 km, and water (69%) within 80 km.

3 km
64 m
16 km
101 m
80 km
1,062 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Shibetsu 52 km · Nakashibetsu 55 km · Kushiro 105 km · Abashiri 131 km · Motomachi 132 km · Kitami 146 km · Engaru 182 km · Sarubetsu 188 km

Japan travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
100 V · 50 / 60 Hz
Prices
≈ 65% of US
price level, 2025
GDP per capita
$35,951
2025
Happiness
6.1 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.2
per 100k, 2023
Road deaths
3.6
per 100k/yr, 2019
Income group
High
World Bank
English
Very low
EF EPI 446
Religion
Shintoism 49%Buddhism 46%other 4%Christianity 1%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Nemuro (43.3236°, 145.575°, elevation 24 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).